Wiring
BIG 3+ Battery Cable Upgrade Installation Guide
This comprehensive guide will walk you through the installation process for your Quadstar Tuning LLC Battery Cable Upgrade Kit. This upgrade significa...
GM DB2 Pump Wiring Information
This article shows wiring information for the DB2 pumps generally used on GM 6.2 and 6.5L civilian vehicles (12 volt applications) 12v Power Should po...
1994+ 6.5L Diesel: Is the Optical Sensor Filter Harness Necessary?
Summary: This article addresses the question of whether the optional sensor filter harness is required for 1994 and newer 6.5L diesel engines with th...
Engine Ground Maintenance
Grounds are a vital component of any Electronic Fuel Injection (EFI) vehicle. 1994 and later 6.5 diesel vehicles are EFI! If you have strange issues...